SIST-TP CEN/TR 16798-10:2018

Energy performance of buildings - Ventilation for buildings - Part 10: Interpretation of the requirements in EN 16798-9 - Calculation methods for energy requirements of cooling systems (Module M4-1,M4-4, M4-9) - General

This Technical Report refers to the standard EN 16798-9.
It contains information to support the correct understanding, use and national adaptation of this
standard.

Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 10: Interpretation der Anforderungen der EN 16798-9 - Berechnungsmethoden für den Energiebedarf von Kühlsystemen (Module M4-1, M4-4, M4-9) - Allgemeines

Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 10 : Interprétation des exigences de la norme EN 16798-9 - Méthodes de calcul des besoins énergétique des systèmes de refroidissement (Modules M4-1,M4-4, M4-9) - Généralités

Le présent rapport technique fait référence à l'EN 16798-9.
Il contient des informations permettant d’assurer une bonne compréhension, utilisation et adaptation au niveau national de cette norme.

Energijske lastnosti stavb - Prezračevanje stavb - 10. del: Razlaga in utemeljitev EN 16798-9 - Metode za izračun potrebne energije za hladilne sisteme - Moduli M4-1, M4-4, M4-9 - Splošno

To tehnično poročilo se nanaša na standard EN 16798-9.
Vsebuje informacije za pomoč pri pravilnem razumevanju, uporabi in nacionalni prilagoditvi tega standarda.

General Information

• Status: Published
• Public Enquiry End Date: 09-Jan-2017
• Publication Date: 13-Jun-2018
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: OGS - Heating for buildings
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-May-2018
• Due Date: 22-Jul-2018
• Completion Date: 14-Jun-2018
• Directive: 2010/31/EU - Directive 2010/31/eu of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (recast)
• Mandate: M/480 - Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and promoting the energy efficiency of buildings, in accordance with the terms set in the recast of the Directive on the energy performance buildings (2010/31/EU)
• Ref Project: CEN/TR 16798-10:2017 - Energy performance of buildings - Ventilation for buildings - Part 10: Interpretation of the requirements in EN 16798-9 - Calculation methods for energy requirements of cooling systems (Module M4-1,M4-4, M4-9) - General

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 16798-10:2018
01-julij-2018
(QHUJLMVNHODVWQRVWLVWDYE3UH]UDþHYDQMHVWDYEGHO5D]ODJDLQXWHPHOMLWHY
(10HWRGH]DL]UDþXQSRWUHEQHHQHUJLMH]DKODGLOQHVLVWHPH0RGXOL0
006SORãQR
Energy performance of buildings - Ventilation for buildings - Part 10: Interpretation of the
requirements in EN 16798-9 - Calculation methods for energy requirements of cooling
systems (Module M4-1,M4-4, M4-9) - General
Energieeffizienz von Gebäuden - Lüftung von Gebäuden - Teil 10: Interpretation der
Anforderungen der EN 16798-9 - Berechnungsmethoden für den Energiebedarf von
Kühlsystemen (Module M4-1, M4-4, M4-9) - Allgemeines
Performance énergétique des bâtiments - Ventilation des bâtiments - Partie 10 :
Interprétation des exigences de la norme EN 16798-9 - Méthodes de calcul des besoins
énergétique des systèmes de refroidissement (Modules M4-1,M4-4, M4-9) - Généralités
Ta slovenski standard je istoveten z: CEN/TR 16798-10:2017
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
SIST-TP CEN/TR 16798-10:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16798-10:2018

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SIST-TP CEN/TR 16798-10:2018


CEN/TR 16798-10
TECHNICAL REPORT

RAPPORT TECHNIQUE

June 2017
TECHNISCHER BERICHT
ICS 91.120.10; 91.140.30
English Version

Energy performance of buildings - Ventilation for buildings
- Part 10: Interpretation of the requirements in EN 16798-
9 - Calculation methods for energy requirements of cooling
systems (Module M4-1,M4-4, M4-9) - General
Performance énergétique des bâtiments - Ventilation Energieeffizienz von Gebäuden - Lüftung von
des bâtiments - Partie 10 : Interprétation des exigences Gebäuden - Teil 10: Interpretation der Anforderungen
de la norme EN 16798-9 - Méthodes de calcul des der EN 16798-9 - Berechnungsmethoden für den
besoins énergétique des systèmes de refroidissement Energiebedarf von Kühlsystemen (Module M4-1, M4-4,
(Modules M4-1,M4-4, M4-9) - Généralités M4-9) - Allgemeines


This Technical Report was approved by CEN on 27 February 2017. It has been drawn up by the Technical Committee CEN/TC
156.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16798-10:2017 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Symbols, subscripts and abbreviations. 9
4.1 Symbols . 9
4.2 Subscripts . 9
4.3 Abbreviations . 9
5 Brief description of the methods . 10
5.1 General . 10
5.2 Output of the methods . 10
5.3 General description of the methods . 11
5.3.1 General . 11
5.3.2 Method 1 (simplified) . 11
5.3.3 Method 2 (detailed) . 14
5.4 Selection criteria between the methods . 15
6 Calculation method 1 (simplified) . 15
6.1 Output data . 15
6.2 Calculation time interval and calculation period . 15
6.2.1 Calculation interval . 15
6.2.2 Calculation period . 15
6.3 Input data . 15
6.4 Calculation procedure, method 1 . 16
6.4.1 Applicable time intervals . 16
6.4.2 Operating conditions calculation . 16
6.4.3 Energy calculation . 16
7 Calculation method 2 (detailed) . 17
7.1 Output data . 17
7.2 Calculation time interval and calculation period . 17
7.2.1 Calculation interval . 17
7.2.2 Calculation period . 17
7.3 Input data . 17
7.4 Calculation procedure . 17
7.4.1 Applicable calculation intervals . 17
7.4.2 Operating conditions calculation . 18
7.4.3 Energy calculation . 19
8 Energy performance expression. 20
9 Quality control . 20
10 Compliance check. 20
11 Worked out examples, method 1 . 20
2

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11.1 Example 1 . 20
11.1.1 Description . 20
11.1.2 Calculation details . 24
11.1.3 Observations . 24
12 Worked out examples, method 2 . 25
12.1 Example 2 . 25
12.1.1 Description . 25
12.1.2 Calculation details . 36
12.1.3 Remarks and comments . 36
12.2 Example 3 . 37
12.2.1 Description . 37
12.2.2 Calculation details . 43
12.2.3 Remarks and comments . 43
13 Validation of the calculation procedures . 43
14 Ventilative cooling . 43
14.1 General . 43
14.2 Method . 43
14.2.1 Hourly calculation . 43
14.2.2 Monthly calculation . 44
Annex A (informative) Input and method selection data sheet — Template . 45
A.1 General . 45
A.2 References . 45
A.3 Title of A.3 . 45
A.4 Title of A.4 . 45
Annex B (informative) Input and method selection data sheet — Default choices . 46
B.1 General . 46
B.2 References . 46
B.3 Title of B.3 . 46
B.4 Title of B.4 . 46
Annex C (informative) System overview and required functionalities . 47
Annex D (informative) Calculation examples . 48
D.1 Spreadsheet . 48
D.2 Example 1 . 48
D.3 Example 2 . 54
Bibliography . 63

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European foreword
This document (CEN/TR 16798-10:2017) has been prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”, the secretariat of which is held by BSI.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This document has been produced to meet the requirements of Directive 2010/31/EU 19 May 2010 on
the energy performance of buildings (recast), referred to as “recast EPDB”.
For the convenience of Standards users CEN/TC 156, together with responsible Working Group
Convenors, have prepared a simple table below relating, where appropriate, the relationship between
the ‘EPBD’ and ‘recast EPBD’ standard numbers prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”.
EPBD EN Recast EPBD EN
Title
Number Number
Energy performance of buildings – Ventilation for buildings –
Part 1: Indoor environmental input parameters for design
EN 15251 EN 16798-1 and assessment of energy performance of buildings
addressing indoor air quality, thermal environment, lighting
and acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 2: Interpretation of the requirements in EN 16798-1 –
Indoor environmental input parameters for design and
N/A CEN/TR 16798-2
assessment of energy performance of buildings addressing
indoor air quality, thermal environment, lighting and
acoustics (Module M1-6)
Energy performance of buildings – Ventilation for buildings –
Part 3: For non-residential buildings – Performance
EN 16798-3
requirements for ventilation and room-conditioning systems
EN 13779

(Modules M5-1, M5-4)

Energy performance of buildings – Ventilation for buildings –
Part 4: Interpretation of the requirements in EN 16798- 3 –
N/A CEN/TR 16798-4 For non-residential buildings – Performance requirements
for ventilation and room-conditioning systems (Modules M5-
1, M5-4)
4

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Energy performance of buildings – Ventilation for buildings –
Part 5-1: Calculation methods for energy requirements of
ventilation and air conditioning systems (Modules M5-6, M5-
EN 15241 EN 16798-5-1
8, M6-5, M6-8, M7-5, M7-8) – Method 1: Distribution and
generation

Energy performance of buildings – Ventilation for buildings –
Part 5-2: Calculation methods for energy requirements of
ventilation systems (Modules M5-6.2, M5-8.2) – Method 2:
EN 15241 EN 16798-5-2
Distribution and generation

Energy performance of buildings – Ventilation for buildings –
Part 6: Interpretation of the requirements in EN 16798-5–1
N/A CEN/TR 16798-6 and EN 16798-5-2 – Calculation methods for energy
requirements of ventilation and air conditioning systems
(Modules M5-6, M5-8, M 6-5, M6-8 , M7-5, M7-8)
Energy performance of buildings – Ventilation for buildings –
Part 7: Calculation methods for the determination of air flow
EN 15242 EN 16798-7
rates in buildings including infiltration (Module M5-5)

Energy performance of buildings – Ventilation for buildings –
Part 8: Interpretation of the requirements in EN 16798-7 –
N/A CEN/TR 16798-8
Calculation methods for the determination of air flow rates in
buildings including infiltration – (Module M5-5)
Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-9 Part 9: Calculation methods for energy requirements of
cooling systems (Modules M4-1, M4-4, M4-9) – General
Energy performance of buildings – Ventilation for buildings –
Part 10: Interpretation of the requirements in EN 16798-9 –
Calculation methods for energy requirements of cooling
N/A CEN/TR 16798-10
systems (Module M4-1,M4-4, M4-9) – General

Energy performance of buildings – Ventilation for buildings –
EN 15243 EN 16798-13 Part 13: Calculation of cooling systems (Module M4-8) –
Generation
Energy performance of buildings – Ventilation for buildings –
EN 15243 CEN/TR 16798-14 Part 14: Interpretation of the requirements in EN 16798-13 –
Calculation of cooling systems (Module M4-8) – Generation
Energy performance of buildings – Ventilation for buildings –
N/A EN 16798-15 Part 15: Calculation of cooling systems (Module M4-7) –
Storage
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Energy performance of buildings – Ventilation for buildings –
N/A CEN/TR 16798-16 Part 16: Interpretation of the requirements in EN 16798-15 –
Calculation of cooling systems (Module M4-7) – Storage
Energy performance of buildings – Ventilation for buildings –
EN 15239 and
EN 16798-17 Part 17: Guidelines for inspection of ventilation and air-
EN 15240
conditioning systems (Module M4-11, M5-11, M6-11, M7-11)
Energy performance of buildings – Ventilation for buildings –
Part 18: Interpretation of the requirements in EN 16798-17 –
N/A CEN/TR 16798-18
Guidelines for inspection of ventilation and air-conditioning
systems (Module M4-11, M5-11, M6-11, M7-11)

6

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Introduction
The set of EPB standards, Technical Reports and supporting tools
In order to facilitate the necessary overall consistency and coherence, in terminology, approach,
input/output relations and formats, for the whole set of EPB-standards, the following documents and
tools are available:
a) a document with basic principles to be followed in drafting EPB-standards: CEN/TS 16628, Energy
Performance of Buildings — Basic Principles for the set of EPB standards [3];
b) a document with detailed technical rules to be followed in drafting EPB-standards; CEN/TS 16629,
Energy Performance of Buildings — Detailed Technical Rules for the set of EPB-standards [4];
c) the detailed technical rules are the basis for the following tools:
1) a common template for each EPB-standard, including specific drafting instructions for the
relevant clauses;
2) a common template for each technical report that accompanies an EPB standard or a cluster of
EPB standards, including specific drafting instructions for the relevant clauses;
3) a common template for the spreadsheet that accompanies each EPB standard, to demonstrate
the correctness of the EPB calculation procedures.
Each EPB-standard follows the basic principles and the detailed technical rules and relates to the
overarching EPB-standard, EN ISO 52000-1.
One of the main purposes of the revision of the EPB-standards is to enable that laws and regulations
directly refer to the EPB-standards and make compliance with them compulsory. This requires that the
set of EPB-standards consists of a systematic, clear, comprehensive and unambiguous set of energy
performance procedures. The number of options provided is kept as low as possible, taking into
account national and regional differences in climate, culture and building tradition, policy and legal
frameworks (subsidiarity principle). For each option, an informative default option is provided
(Annex B).
Rationale behind the EPB technical reports
There is a risk that the purpose and limitations of the EPB standards will be misunderstood, unless the
background and context to their contents – and the thinking behind them – is explained in some detail
to readers of the standards. Consequently, various types of informative content are recorded and made
available for users to properly understand, apply and nationally or regionally implement the EPB
standards.
If this explanation would have been attempted in the standards themselves, the result is likely to be
confusing and cumbersome, especially if the standards are implemented or referenced in national or
regional building codes.
Therefore each EPB standard is accompanied by an informative technical report, like this one, where all
informative content is collected, to ensure a clear separation between normative and informative
contents (see CEN/TS 16629 [4]):
— to avoid flooding and confusing the actual normative part with informative content;
— to reduce the page count of the actual standard; and
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— to facilitate understanding of the set of EPB standards.
This was also one of the main recommendations from the European CENSE project [10] that laid the
foundation for the preparation of the set of EPB standards.
This Technical Report
This Technical Report accompanies the EPB standard on the general part of the calculation of the
energy performance of cooling systems. It relates to the standard EN 16798-9, which forms part of a set
of standards related to the evaluation of the energy performance of buildings (EPB).
The role and the positioning of the accompanied standard in the set of EPB standards is defined in the
Introduction to the standard.
Accompanying spreadsheet(s)
Concerning the accompanied standard EN 16798-9, the following spreadsheets were produced:
— on EN 16798-9, for the simplified method;
— on EN 16798-9, for the detailed method;
— on EN 16798-9, for the detailed method, as a master in combination with those on EN 15316-2,
EN 15316-3, EN 16798-5-1, EN 16798-7, EN 16798-13 and EN 16798-15.
In this Technical Report, examples of each of these calculation sheets are included.
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1 Scope
This Technical Report refers to the standard EN 16798-9.
It contains information to support the correct understanding, use and national adaptation of this
standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE More information on the use of EPB module numbers for normative references between EPB standards
is given in CEN ISO/TR 52000-2.
EN 16798-9:2017, Energy performance of buildings — Ventilation for buildings — Part 9: Calculation
methods for energy requirements of cooling systems (Module M4-1, M4-4, M4-9) — General
EN ISO 52000-1:2017, Energy performance of buildings — Overarching EPB assessment — Part 1:
General framework and procedures (ISO 52000-1:2017)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16798-9:2017 apply.
NOTE More information on some key EPB terms and definitions is given in CEN ISO/TR 52000-2.
4 Symbols, subscripts and abbreviations
4.1 Symbols
For the purposes of this document, the symbols as mentioned and given in the accompanied EPB
standard, EN 16798-9, apply.
More information on key EPB symbols is given in CEN ISO/TR 52000-2.
4.2 Subscripts
For the purposes of this document, the subscripts as mentioned and given in the accompanied EPB
standard, EN 16798-9, apply.
More information on key EPB subscripts is given in CEN ISO/TR 52000-2.
4.3 Abbreviations
For the purposes of this document, the abbreviations as mentioned and given in the accompanied EPB
standard, EN 16798-9, apply.
More information on key EPB abbreviations is given in CEN ISO/TR 52000-2.
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5 Brief description of the methods
5.1 General
The accompanied EPB standard, EN 16798-9, covers two different methods for the calculation of the
energy performance of cooling systems: a simplified and a detailed method.
The simplified method 1 requires minimum input date and treats certain areas (like the emission and
distribution heat losses and auxiliary energy) by the use of overall factors. The detailed method 2 refers
to the outputs provided by the respective standards for the calculation of the losses and the auxiliary
energy at all stages, and therefore needs considerably more input data.
5.2 Output of the methods
The simplified method 1 covers the calculation of:
— the required cooling generation outlet temperature;
— the required cooling energy to be extracted by the cooling generation system, based on the
requirements of the thermal zones and the air handling units (AHUs) calculated according to the
module M2-2 and M5-8 standards;
— the cooling energy extracted from the distribution systems, based on the cooling energy extracted
by the generation system according to the M4-8 standard, considering possible priorities;
— the cooling energy extracted from the thermal zones and the AHUs, considering the emission losses
according to the M4-5 standard and the distribution losses according to the M4-6 standard.
In addition to the above, the detailed method 2 covers the calculation of:
— the flow and return water temperatures in the cooling distribution systems, based on the required
values;
— the volume flow rates of the cooling distribution systems;
— possible storage effects according to the M4-7 standard cooling energy extracted from the
distribution systems.
The interval of the output can be:
— yearly;
— monthly;
— hourly;
— bin.
Based on both methods, there are formulae given for the calculation of technical system performance
indicators for cooling systems.
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5.3 General description of the methods
5.3.1 General
In this and all subsequent calculation methods, cooling energy is defined as extracted heat in the exact
physical meaning. Positive values mean heat taken out of the system. Heat flows generally have
opposite direction of the related flow rates.
5.3.2 Method 1 (simplified)
This calculation method:
— defines ho
...

SLOVENSKI STANDARD
kSIST-TP FprCEN/TR 16798-10:2016
01-december-2016
[Not translated]
Energy performance of buildings - Part 10: Ventilation for buildings - Methods for the
calculation of the energy performance of cooling systems - General - Technical report -
Interpretation of the requirements in EN 16798-9 - Modules M4-1, M4-4, M4-9
Energieeffizienz von Gebäuden - Teil 10: Lüftung von Gebäuden - Modul 4-1 -
Berechnungsmethoden für energetische Anforderungen von Kühlsystemen - Allgemeine
Festlegungen - Technischer Report zur Interpretation der Festlegungen in EN 16798-9
Performance énergétique des bâtiments - Partie 10 : Ventilation des bâtiments -
Méthodes de calcul des besoins énergétique des systèmes de refroidissement -
Généralités - Rapport technique - Interprétation des exigences de la norme EN 16798-9 -
Modules M4-1,M4-4, M4-9
Ta slovenski standard je istoveten z: FprCEN/TR 16798-10
ICS:
91.140.30 3UH]UDþHYDOQLLQNOLPDWVNL Ventilation and air-
VLVWHPL conditioning systems
kSIST-TP FprCEN/TR 16798-10:2016 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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kSIST-TP FprCEN/TR 16798-10:2016


FINAL DRAFT
TECHNICAL REPORT
FprCEN/TR 16798-10
RAPPORT TECHNIQUE

TECHNISCHER BERICHT

November 2016
ICS 91.120.10; 91.140.30
English Version

Energy performance of buildings - Part 10: Ventilation for
buildings - Methods for the calculation of the energy
performance of cooling systems - General - Technical
report - Interpretation of the requirements in EN 16798-9
- Modules M4-1, M4-4, M4-9
Performance énergétique des bâtiments - Partie 10 : Energieeffizienz von Gebäuden - Teil 10: Lüftung von
Ventilation des bâtiments - Méthodes de calcul des Gebäuden - Modul 4-1 - Berechnungsmethoden für
besoins énergétique des systèmes de refroidissement - energetische Anforderungen von Kühlsystemen -
Généralités - Rapport technique - Interprétation des Allgemeine Festlegungen - Technischer Report zur
exigences de la norme EN 16798-9 - Modules M4-1,M4- Interpretation der Festlegungen in EN 16798-9
4, M4-9


This draft Technical Report is submitted to CEN members for Vote. It has been drawn up by the Technical Committee CEN/TC
156.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a Technical Report. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a Technical Report.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. FprCEN/TR 16798-10:2016 E
worldwide for CEN national Members.

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kSIST-TP FprCEN/TR 16798-10:2016
FprCEN/TR 16798-10:2016 (E)
Contents Page
European foreword . 4
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Symbols, subscripts and abbreviations. 9
4.1 Symbols . 9
4.2 Subscripts . 9
4.3 Abbreviations . 9
5 Brief description of the methods . 10
5.1 General . 10
5.2 Output of the methods . 10
5.3 General description of the methods . 11
5.3.1 General . 11
5.3.2 Method 1 (simplified) . 11
5.3.3 Method 2 (detailed) . 14
5.4 Selection criteria between the methods . 15
6 Calculation method 1 (simplified) . 15
6.1 Output data . 15
6.2 Calculation time interval and calculation period . 15
6.2.1 Calculation interval . 15
6.2.2 Calculation period . 15
6.3 Input data . 15
6.4 Calculation procedure, method 1 . 16
6.4.1 Applicable time intervals . 16
6.4.2 Operating conditions calculation . 16
6.4.3 Energy calculation . 16
7 Calculation method 2 (detailed) . 17
7.1 Output data . 17
7.2 Calculation time interval and calculation period . 17
7.2.1 Calculation interval . 17
7.2.2 Calculation period . 17
7.3 Input data . 17
7.4 Calculation procedure . 17
7.4.1 Applicable calculation intervals . 17
7.4.2 Operating conditions calculation . 18
7.4.3 Energy calculation . 19
8 Energy performance expression. 20
9 Quality control . 20
10 Compliance check. 20
11 Worked out examples, method 1 . 20
2

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11.1 Example 1 . 20
11.1.1 Description . 20
11.1.2 Calculation details . 24
11.1.3 Observations . 24
12 Worked out examples, method 2 . 25
12.1 Example 2 . 25
12.1.1 Description . 25
12.1.2 Calculation details . 36
12.1.3 Remarks and comments . 36
12.2 Example 3 . 37
12.2.1 Description . 37
12.2.2 Calculation details . 42
12.2.3 Remarks and comments . 43
13 Validation of the calculation procedures . 43
14 Ventilative cooling . 43
14.1 General . 43
14.2 Method . 43
14.2.1 Hourly calculation . 43
14.2.2 Monthly calculation . 44
Annex A (informative) Input and method selection data sheet — Template . 45
A.1 General . 45
A.2 References . 45
A.3 Title of A.3 . 45
A.4 Title of A.4 . 45
Annex B (informative) Input and method selection data sheet — Default choices . 46
B.1 General . 46
B.2 References . 46
B.3 Title of B.3 . 46
B.4 Title of B.4 . 46
Annex C (informative) System overview and required functionalities . 47
Annex D (informative) Calculation examples . 48
D.1 Spreadsheet . 48
D.2 Example 1 . 49
D.3 Example 2 . 53
Bibliography . 61

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European foreword
This document (FprCEN/TR 16798-10:2016) has been prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”, the secretariat of which is held by BSI.
This document is currently submitted to the Vote on TR.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
This standard has been produced to meet the requirements of Directive 2010/31/EU 19 May 2010 on
the energy performance of buildings (recast), referred to as “recast EPDB”.
For the convenience of Standards users CEN/TC 156, together with responsible Working Group
Convenors, have prepared a simple table below relating, where appropriate, the relationship between
the ‘EPBD’ and ‘recast EPBD’ standard numbers prepared by Technical Committee CEN/TC 156
“Ventilation for buildings”.
EPBD EN Recast EPBD EN
Title
Number Number
EN 15251 EN 16798–1 Energy performance of buildings — Part 1: Indoor
environmental input parameters for design and assessment of
energy performance of buildings addressing indoor air quality,
thermal environment, lighting and acoustics — Module M1-6
(revision of EN 15251)
N/A CEN/TR 16798–2 Energy performance of buildings — Part 2: Indoor
environmental input parameters for design and assessment of
energy performance of buildings addressing indoor air quality,
thermal environment, lighting and acoustics — Module M1-
6 — Technical report — Interpretation of the requirements in
EN 16798–1
EN 13779 EN 16798–3 Energy performance of buildings — Part 3: Ventilation for
non-residential buildings — Performance requirements for
ventilation and room-conditioning systems
(revision of EN 13779)
N/A CEN/TR 16798–4 Energy performance of buildings — Part 4: Ventilation for
non-residential buildings — Performance requirements for
ventilation, air conditioning and room-conditioning
systems — Technical Report — Interpretation of the
requirements in EN 16798–3
EN 15241 EN 16798–5–1 Energy performance of buildings — Modules M5-6, M5-8, M6-
5, M6-8, M7-5, M7-8 — Ventilation for buildings — Calculation
methods for energy requirements of ventilation and air
conditioning systems — Part 5-1: Distribution and
generation — Method 1
(revision of EN 15241)
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EPBD EN Recast EPBD EN
Title
Number Number
EN 15241 EN 16798–5–2 Energy performance of buildings — Modules M5-6.2, M5-
8.2 — Ventilation for buildings — Calculation methods for
energy requirements of ventilation systems — Part 5-2:
Distribution and generation — Method 2
(revision of EN 15241)
N/A CEN/TR 16798–6 Energy performance of buildings — Part 6: Ventilation for
buildings — Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8 —
Calculation methods for energy requirements of ventilation
and air conditioning systems — Technical report —
Interpretation of the requirements in EN 16798–5–1 and
EN 16798–5–2
EN 15242 EN 16798–7 Energy performance of buildings — Part 7: Ventilation for
buildings — Modules M5-1, M5-5, M5-6, M5-8 — Calculation
methods for the determination of air flow rates in buildings
including infiltration
(revision of EN 15242)
N/A CEN/TR 16798–8 Energy performance of buildings — Part 8: Ventilation for
buildings — Modules M5-1, M5-5, M5-6, M5-8 — Calculation
methods for the determination of air flow rates in buildings
including infiltration — Technical report — Interpretation of
the requirements in EN 16798–7
EN 15243 EN 16798–9 Energy performance of buildings — Part 9: Ventilation for
buildings — Module M4-1, M4-4, M4-9 — Calculation methods
for energy requirements — Calculation methods for energy
requirements of cooling systems — General
(revision of EN 15243)
N/A CEN/TR 16798– Energy performance of buildings — Part 10: Ventilation for
10 buildings — Methods for the calculation of the energy
performance of cooling systems — General — Technical
report — Interpretation of the requirements in EN 16798–
9 — Modules M4–1, M4–4, M4–9
N/A EN 16798–13 Energy performance of buildings — Part 13: Module M4-8 —
Calculation of cooling systems — Generation
N/A CEN/TR 16798– Energy performance of buildings — Part 14: Module M4-8 —
14 Calculation of cooling systems — Generation — Technical
report — Interpretation of the requirements in EN 16798–13
N/A EN 16798–15 Energy performance of buildings — Part 15: Module M4-7 —
Calculation of cooling systems — Storage
N/A CEN/TR 16798– Energy performance of buildings — Module M4-7 —
16 Calculation of cooling systems — Storage — Part 16: Technical
report — Explanation of the requirements of EN 16798–15
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EPBD EN Recast EPBD EN
Title
Number Number
EN 15239 and EN 16798–17 Energy performance of buildings — Part 17: Ventilation for
EN 15240 buildings — Guidelines for inspection of ventilation and air
conditioning systems, Module M4-11, M5-11, M6-11, M7-11
N/A CEN/TR 16798– Energy performance of buildings — Part 18: Ventilation for
18 buildings — Module M4-11, M5-11, M6-11, M7-11 —
Guidelines for inspection of ventilation and air-conditioning
systems — Technical report — Interpretation of the
requirements in EN 16798–17

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Introduction
The set of EPB standards, technical reports and supporting tools
In order to facilitate the necessary overall consistency and coherence, in terminology, approach,
input/output relations and formats, for the whole set of EPB-standards, the following documents and
tools are available:
a) a document with basic principles to be followed in drafting EPB-standards: CEN/TS 16628, Energy
Performance of Buildings — Basic Principles for the set of EPB standards [3];
b) a document with detailed technical rules to be followed in drafting EPB-standards; CEN/TS 16629,
Energy Performance of Buildings — Detailed Technical Rules for the set of EPB-standards [4];
c) the detailed technical rules are the basis for the following tools:
1) a common template for each EPB-standard, including specific drafting instructions for the
relevant clauses;
2) a common template for each technical report that accompanies an EPB standard or a cluster of
EPB standards, including specific drafting instructions for the relevant clauses;
3) a common template for the spreadsheet that accompanies each EPB standard, to demonstrate
the correctness of the EPB calculation procedures.
Each EPB-standard follows the basic principles and the detailed technical rules and relates to the
overarching EPB-standard, prEN ISO 52000-1.
One of the main purposes of the revision of the EPB-standards is to enable that laws and regulations
directly refer to the EPB-standards and make compliance with them compulsory. This requires that the
set of EPB-standards consists of a systematic, clear, comprehensive and unambiguous set of energy
performance procedures. The number of options provided is kept as low as possible, taking into
account national and regional differences in climate, culture and building tradition, policy and legal
frameworks (subsidiarity principle). For each option, an informative default option is provided
(Annex B).
Rationale behind the EPB technical reports
There is a risk that the purpose and limitations of the EPB standards will be misunderstood, unless the
background and context to their contents – and the thinking behind them – is explained in some detail
to readers of the standards. Consequently, various types of informative content are recorded and made
available for users to properly understand, apply and nationally or regionally implement the EPB
standards.
If this explanation would have been attempted in the standards themselves, the result is likely to be
confusing and cumbersome, especially if the standards are implemented or referenced in national or
regional building codes.
Therefore each EPB standard is accompanied by an informative technical report, like this one, where all
informative content is collected, to ensure a clear separation between normative and informative
contents (see CEN/TS 16629 [4]):
— to avoid flooding and confusing the actual normative part with informative content,
— to reduce the page count of the actual standard; and
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— to facilitate understanding of the set of EPB standards.
This was also one of the main recommendations from the European CENSE project [10] that laid the
foundation for the preparation of the set of EPB standards.
This Technical Report
This Technical Report accompanies the EPB standard on the general part of the calculation of the
energy performance of cooling systems. It relates to the standard FprEN 16798-9, which forms part of a
set of standards related to the evaluation of the energy performance of buildings (EPB).
The role and the positioning of the accompanied standard in the set of EPB standards is defined in the
Introduction to the standard.
Accompanying spreadsheet(s)
Concerning the accompanied standard FprEN 16798-9, the following spreadsheets were produced:
— on FprEN 16798-9, for the simplified method;
— on FprEN 16798-9, for the detailed method;
— on FprEN 16798-9, for the detailed method, as a master in combination with those on
prEN 15316-2, prEN 15316-3, EN 16798-5-1, EN 16798-7, EN 16798-13 and EN 16798-15.
In this technical report, examples of each of these calculation sheets are included.
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1 Scope
This Technical Report refers to the standard FprEN 16798-9.
It contains information to support the correct understanding, use and national adaptation this standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE More information on the use of EPB module numbers for normative references between EPB standards
is given in ISO/PRF TR 52000-2.
FprEN 16798-9:2016, Energy performance of buildings — Part 9: Ventilation for buildings — Module M4-
1, M4-4, M4-9 — Calculation methods for energy requirements — Calculation methods for energy
requirements of cooling systems — General
prEN ISO 52000-1:2015, Energy performance of buildings — Overarching EPB assessment — Part 1:
General framework and procedures (ISO/DIS 52000-1)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in FprEN 16798-9:2016 apply.
NOTE More information on some key EPB terms and definitions is given in ISO/PRF TR 52000-2.
4 Symbols, subscripts and abbreviations
4.1 Symbols
For the purposes of this Technical Report, the symbols as mentioned and given in the accompanied EPB
standard, FprEN 16798-9, apply.
More information on key EPB symbols is given in ISO/PRF TR 52000-2.
4.2 Subscripts
For the purposes of this Technical Report, the subscripts as mentioned and given in the accompanied
EPB standard, FprEN 16798-9, apply.
More information on key EPB subscripts is given in ISO/PRF TR 52000-2.
4.3 Abbreviations
For the purposes of this Technical Report, the abbreviations as mentioned and given in the
accompanied EPB standard, FprEN 16798-9, apply.
More information on key EPB abbreviations is given in ISO/PRF TR 52000-2.
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5 Brief description of the methods
5.1 General
The accompanied EPB standard, FprEN 16798-9, covers two different methods for the calculation of the
energy performance of cooling systems: a simplified and a detailed method.
The simplified method 1 requires minimum input date and treats certain areas (like the emission and
distribution heat losses and auxiliary energy) by the use of overall factors. The detailed method 2 refers
to the outputs provided by the respective standards for the calculation of the losses and the auxiliary
energy at all stages, and therefore needs considerably more input data.
5.2 Output of the methods
The simplified method 1 covers the calculation of:
— the required cooling generation outlet temperature;
— the required cooling energy to be extracted by the cooling generation system, based on the
requirements of the thermal zones and the air handling units (AHUs) calculated according to the
module M2-2 and M5-8 standards.
— the cooling energy extracted from the distribution systems, based on the cooling energy extracted
by the generation system according to the M4-8 standard, considering possible priorities;
— the cooling energy extracted from the thermal zones and the AHUs, considering the emission losses
according to the M4-5 standard and the distribution losses according to the M4-6 standard;
In addition to the above, the detailed method 2 covers the calculation of:
— the flow and return water temperatures in the cooling distribution systems, based on the required
values;
— the volume flow rates of the cooling distribution systems;
— possible storage effects according to the M4-7 standard cooling energy extracted from the
distribution systems.
The interval of the output can be:
— yearly;
— monthly;
— hourly;
— bin.
Based on both methods, there are formulae gi
...